usbfs_snoop and output location, klogd question

[offset <offset@xxxxxxxxxxxxxxxx>]

I'm a newbie for USB, so please be gentle :)

I'm trying to examine the traffic between a usb device and the windows driver for the usb device using VMware and usbfs.

I've got usbcore.usbfs_snoop=1 working properly and running klogd -f <output> (so I dont muddy up my syslog) and I am seeing the traffic for the usb devices I am examining.

Now for the newbie questions.

1)  Is using klogd -f the best way for me to get a stream of data for the usb device?   The output is still in text format and if this is the correct way to get to the data, I'm considering writing a parser to convert all of the data: <hex> <hex> information into a binary stream that I can then examine.

2)  I've noticed in the klogd -f output, it appears that klogd puts in <6> for the majority of the usb traffic that I need, but sometimes I will see a small amount of data with <4>.   Is there a case where usb communication would be logged at the <6> and <4> level for the usb device?  Not sure why I would be seeing different levels of klog traffic.

Thanks in advance,

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offset - ubersecurity org
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